Muscular System

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Types of muscles

Smooth muscles - Found in internal organs and blood vessels

Cardiac muscles - Found in the heart

Skeletal mucles - Attached to the skeleton

Muscle Fibre types

Slow twitch - Type 1 (oxidate)

Fast twitch - Type 2 (glycolytic)

Type 1

Slow contraction

Low force produced

High resistance to fatigue

Red in colour

Aerobic energy system

Type 2

Fast contraction

Medium/high force produced

Medium/low resistance to fatigue

White in colour

Anaerobic energy system

Voluntary Muscles

Main voluntary muscles in the body are:

Deltoid

Pectorals

Biceps

Abdominals

Quadriceps

Trapezius

Triceps

Lattisimus dorsi

Gluteals

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